The Kingkey 100 (Chinese: 京基100), whose former name is Kingkey Finance Center Plaza, is a topped out supertall skyscraper in Shenzhen, Guangdong province, China. It is located in Shenzhen's Luohu District in an area which can be described as the financial district.

The mixed-use building is set to rise 441.8 metres (1,449 ft) and contain 100 floors for office space and a hotel. Out of those 98 floors, 68 contain 173,000 square metres (1,862,157 sq ft) of Class A office space, 22 stories for a 35,000 square metres (376,737 sq ft) six-star business hotel and the top four floors of the skyscraper holds a garden and several restaurants. The building's lower levels feature the KK Mall, which opened its doors November 26, 2010, and contains luxury brand stores, restaurants and a Better Living Together (BLT) supermarket. The KK Mall also hosts Shenzhen's first IMAX cinema.

The St. Regis Hotel will occupy floors 75 to 98 of the main tower, which opens in late 2011.

Upon completion sometime in 2011, it will be the tallest building in Shenzhen as well as one of the tallest buildings in southern China.

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Kingkey Finance Building (with the orange external structure) under construction, 8 October 2009.